We have various summer camps for your holidays.You can choose________based on your own interests. (2011·福建,21)
We used to see each other ____ but haven't heard from him since last year.(2012 .辽宁)
More than thirty students competed____ each other in the composition competition. But they could only compete____three medals.
Red____happiness, and people would surely use it on festival days.
Moved by his words, most of the people of the village____the missing child.
Most of the people____the race but none of them won it.